Cloud Seeding

Mechanism to trigger rain.

The role of wind in pollination is
well known, but now scientists discovered another
role for wind in triggering rain.

During cloud formation water can become supercooled, that is, it can get below freezing point but remain not frozen.
This stage is so unstable that we can add some catalyst molecules to trigger rain. Historically humans used silver iodide, frozen carbon dioxide and some salts to trigger rain. This is known as cloud seeding.

Cloud seeding is a type of weather modification that aims to change the amount or type of precipitation that falls from clouds by dispersing substances into the air that serve as cloud condensation or ice nuclei, which alter the microphysical processes within the cloud. The usual intent is to increase precipitation (rain or snow), but hail and fog suppression are also widely practised in airports, where harsh weather conditions are experienced.Wikipedia,
Cloud Seeding, 2018

However nature uses different material to seed the clouds. Nature uses both sea salt and land dust to trigger rain. Wind at the surface of the seas causes waves to roll. Those waves release aerosols into the air carrying the sea salt. The wind carries both the sea salt and the land dust to the clouds. The sea salt and land dust cause the supercooled water to coalesce and trigger
precipitation.

However 1400 years before it was discovered
this was portrayed in the Quran:

[Quran 15:22]
And We sent the seeding winds, then cause the rain to
descend from the sky, and gave you water to drink, though you are not the guardians of its stores.

For centuries it was thought that this was the
role of wind in pollination but now we know that this is the
role of wind in cloud seeding.

How could an illiterate man who lived 1400 years ago have known
about cloud seeding?

(The Christian Bible says that it rains
because someone spills the jars of heaven:
Job 38:37. Hail and snow have their own warehouses:
Job 38:22-23).

To Christians

[Quran 42.14-15]
They only disbanded after they received knowledge (of their Bible) fallaciously among them. And if it were not a word from your Lord [Allah] that postponed it to a later date, it would have been all settled among them then. And those who inherited the Book (the Bible) from them are in great suspicion of it. Therefore call them (to the Quran) and straighten your ways as you are ordered and don't follow their passions and say: "I believe in what Allah revealed of the Book (The Quran) and I was ordered to be just among you (both Christians and Jews); Allah is our Lord and your Lord, we have our actions and you have your actions, no argument between us and you, Allah brings us together and to Him we are (all) destined."

To Muslims

[Quran 6.108]
Do not curse those who call (to worship) other than Allah, so that they don't curse Allah out of spite and ignorance. This is how We [Allah] appealed to each people its own actions; then they will be brought back to their Lord [Allah] who will inform them of what they have been doing.